CN109838313A - A kind of gas turbine anti-asthma blow-off system - Google Patents
A kind of gas turbine anti-asthma blow-off system Download PDFInfo
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- CN109838313A CN109838313A CN201910250863.7A CN201910250863A CN109838313A CN 109838313 A CN109838313 A CN 109838313A CN 201910250863 A CN201910250863 A CN 201910250863A CN 109838313 A CN109838313 A CN 109838313A
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- 230000001088 anti-asthma Effects 0.000 title claims abstract description 113
- 239000000924 antiasthmatic agent Substances 0.000 title claims abstract description 112
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000004044 response Effects 0.000 description 6
- 238000007872 degassing Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000006673 asthma Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
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Abstract
The invention discloses a kind of gas turbine anti-asthma blow-off systems, the blowdown piping including being set to two-stage among compressor；The gas turbine anti-asthma blow-off system further include: anti-asthma vent valve is respectively arranged among the compressor on the blowdown piping of two-stage using pneumatic operated valve；Four control solenoid valves control the mobile gas of air rammer that two-stage blowdown piping among compressor corresponds to anti-asthma vent valve respectively；When controlling solenoid valve power loss, controls corresponding anti-asthma vent valve and open.The present invention controls the opening of anti-asthma vent valve, effectively prevents the dangerous situation that power loss causes anti-asthma vent valve that cannot open by the power loss of control solenoid valve.
Description
Technical field
The present invention relates to gas turbine fields, particularly, are related to a kind of gas turbine anti-asthma blow-off system.
Background technique
It can be seen that from the characteristic curve of compressor and work as the air mass flow reduction for flowing through compressor to a certain extent, make to transport
Row operating condition enters the left side of surge boundary line, then whole compressor will be unable to steady operation.At that time, air mass flow can neglect big
Suddenly small, pressure is low when high when understanding, or even will appear the phenomenon that air-flow is flowed back in ambient atmosphere by compressor, while can also send out
The raw huge sound, makes the vibration of unit accompanied by intense, this to phenomenon be commonly referred to as surge.The sky of gas turbine blower itself
Aerodynamics characteristic determines that it, once surge occurs for compressor, can will generate pressure very close to stall margin in the start and stop stage
The serious consequence that the strong exciting of mechanism of qi, passage component damage even complete machine are scrapped, in consideration of it, gas turbine usually requires to take phase
The anti-asthma vibration means answered.
Substantially there are several types of anti-asthma vibration means at present: one, using adjustable inlet guide vane and stator blade；Two, it uses
Two-spool compressor；Three, cylinder (casing) processing technique；Four, compressor intergrade is deflated.Wherein, compressor intergrade is deflated
It is the air by extracting the specific grade of compressor in specific operating condition, to change the velocity field between compressor stage, comes effectively separate
Stall margin avoids accident, this is a kind of simple and easy, anti-asthma vibration means for being widely used.But this technology is to calming the anger
There are high requirement, the prior art fails that this want is fully achieved the reliability and fast response characteristic that machine intergrade is deflated
Ask, therefore, invent it is a kind of be enable to respond quickly, safe and reliable anti-asthma blow-off system is to the operational safety meaning weight of gas turbine
Greatly.
Summary of the invention
The purpose of the present invention is to solve defect existing in the prior art, one kind is provided and is enable to respond quickly and energy
Effectively avoid the anti-asthma blow-off system for the dangerous situation for causing anti-asthma vent valve that cannot open because of power loss.
To achieve the goals above, the present invention provides a kind of gas turbine anti-asthma blow-off systems, including are set to compressor
The blowdown piping of intermediate two-stage；The gas turbine anti-asthma blow-off system further include:
Anti-asthma vent valve is respectively arranged among the compressor on the blowdown piping of two-stage using pneumatic operated valve；
Four control solenoid valves control the blowdown piping being arranged in two-stage among compressor respectively and correspond to the pneumatic of anti-asthma vent valve
The mobile gas of piston；When controlling solenoid valve power loss, controls corresponding anti-asthma vent valve and open.
By solenoid valve, the circulation of gas source is controlled, to control the pneumatic actuator gas of anti-asthma vent valve, is effectively kept away
The dangerous situation that power loss causes anti-asthma vent valve that cannot open is exempted from.
Gas turbine anti-asthma blow-off system of the present invention further includes air accumulator；Control solenoid valve is triple valve, one end and gas storage
Tank is connected, and one end is connected to atmosphere, and the other end is connected with the corresponding chamber of pneumatic actuator of corresponding anti-asthma vent valve；When each
When two control solenoid valves while power loss that the left and right chamber of the pneumatic actuator of anti-asthma vent valve is connected respectively, gas storage
Compressed air in tank, which enters via corresponding control solenoid valve in the pneumatic actuator of anti-asthma vent valve, pushes the anti-asthma to put
Air valve is opened.
The design of air accumulator and the connection design of triple valve, it is ensured that each switch operation has adequately control empty
Gas improves the safety of system.
Further, when two controls that the left and right chamber of pneumatic actuator of each anti-asthma vent valve is connected respectively
When solenoid valve processed while power loss, the compressed air in the air accumulator enters the anti-asthma vent valve via corresponding control solenoid valve
Pneumatic actuator right chamber, the compression control of the pneumatic actuator left chamber of the anti-asthma vent valve is through corresponding control electricity
Magnet valve is put into atmosphere, at this point, the air rammer of the anti-asthma vent valve is pressed towards left side, anti-asthma vent valve is opened.It effectively realizes and works as
When corresponding two solenoid valve power loss, corresponding anti-asthma vent valve is opened, and realizes quick response.
Further, the blowdown piping that two-stage is wherein arranged in level-one among compressor is 2, on each blowdown piping
Equipped with an anti-asthma vent valve, the left chamber of the pneumatic actuator of two anti-asthma vent valves with same control solenoid valve phase
Even, right chamber is connected with another control solenoid valve.
Pass through the two-way design of blowdown piping in two-stage among compressor wherein level-one, it is ensured that it deflates in corresponding operating condition
Success, further enhances the safety of system.
Above-mentioned gas turbine anti-asthma blow-off system further include:
Fast open electromagnetic valve, the wherein blowdown piping all the way being arranged in the intermediate level-one that compressor has two-way blowdown piping
When anti-asthma vent valve is opened on the corresponding outlet pipe of pneumatic actuator.
By the design of fast open electromagnetic valve, the Rapid degassing function of the blowdown piping at the compressor level position can be realized
Can, further increase the fast-response of gas turbine anti-asthma blow-off system.
Further, which further includes filter and non-return valve；The outlet air of compressor
Successively it is connected through the filter and non-return valve with air accumulator.
Further, air accumulator is equipped with air intake valve for the first time.
Further, air accumulator is equipped with exhaust valve, throttle orifice and automatic exhaust steam valve；Air accumulator pass sequentially through exhaust valve,
Throttle orifice, automatic exhaust steam valve are connected with atmosphere.By the design, the pressure of compressed air in air accumulator is adjusted, it is ensured that gas storage
The safe handling of tank.
Further, air accumulator is equipped with pressure monitor valve；Switching knob there are two being set on pressure monitor valve, respectively
It is connected with pressure gauge and atmosphere.To the internal pressure real time monitoring of air accumulator.
The present invention has the advantage that compared with prior art
1, the present invention controls the opening of anti-asthma vent valve, is effectively prevented power loss and led by the power loss of control solenoid valve
The dangerous situation for causing anti-asthma vent valve that cannot open；
2, control gas source introduces air accumulator from blower outlet, and combines the circulation of control solenoid valve control gas source, to control
The pneumatic actuator gas of anti-asthma vent valve, it is ensured that each switch operation has adequately control air, while pressing
The Rapid degassing design of certain level-one blowdown piping, can increase safety and the fast-response of system among mechanism of qi；
3, the design of the throttle orifice and automatic exhaust steam valve of air accumulator, further improves the safety of system；
4, two anti-asthma vent valves are arranged in certain level-one blowdown piping simultaneously among compressor, increase system safety margin.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of gas turbine anti-asthma blow-off system of the present invention.
In figure, 1- air accumulator, 2,3,16,17- control solenoid valve, the fast open electromagnetic valve of 4-, 5,6,15- anti-asthma vent valve, 7-
Non-return valve, 8- filter, 9- valve, 10- pressure gauge, 11- valve, 12- exhaust valve, 13- throttle orifice, 14- automatic exhaust steam valve.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.
As shown in Figure 1, the present invention provides a kind of gas turbine anti-asthma blow-off systems, mainly by air accumulator 1, control electromagnetism
Valve 2,3,16,17, fast open electromagnetic valve 4, anti-asthma vent valve 5,6,15, non-return valve 7, filter 8, valve 9, pressure gauge 10, valve
11, exhaust valve 12, throttle orifice 13 and automatic exhaust steam valve 14 etc. form.
Anti-asthma blow-off system provided by the invention is to set at the 5th grade of 16 grades of axial-flow compressors there are two blowdown piping,
10th grade is equipped with blowdown piping (different according to the total series of compressor, the series of selected setting blowdown piping is not yet
Together, but all it is to choose intermediate certain level-one or certain two-stage, even choose certain intermediate three-level and deflate), and be arranged at the 5th grade
Two blowdown pipings on be respectively equipped with the 5,6, the 10th grade of anti-asthma vent valve setting blowdown piping be equipped with anti-asthma vent valve 15.
When anti-asthma vent valve 5,6 or 15 is opened, after a certain amount of air of the series is directly discharged into turbine by corresponding blowdown piping
In exhaust system, anti-asthma vent valve 5,6 controls the 5th grade of blowdown piping, and anti-asthma vent valve 15 controls the 10th grade of blowdown piping.Anti-asthma
Vent valve 5,6,15 is pneumatic operated valve, and "ON" and "Off" are that the air rammer being pressurized by two sides controls, the pressure in air accumulator 1
Contracting air is to push the mobile gas of its air rammer, i.e. the pneumatic actuator gas of anti-asthma vent valve 5,6,15.
Control solenoid valve 2,3,16,17 is triple valve, obtain, power loss when state it is different.When the control power loss of solenoid valve 3 and 17
When, port 3 and 2 communicates, and port 1 is closed；When obtaining electric, port 2 and 1 is communicated, and port 3 is closed.When control solenoid valve 2 and 16
When power loss, port 2 and 3 is communicated, and port 1 is closed；When obtaining electric, port 1 and 2 is communicated, and port 3 is closed.When control solenoid valve 2
When with 3 while power loss, the compressed air in air accumulator 1 enters the pneumatic execution of anti-asthma vent valve 5 through the port 3 to 2 of control valve 3
The compressed air of mechanism right chamber, the pneumatic actuator left chamber of anti-asthma vent valve 5 is placed into through the port 2 to 3 of control valve 2
Atmosphere, the air rammer of the pneumatic actuator of anti-asthma vent valve 5 are pressed towards left side, and anti-asthma vent valve 5 is opened；When control electromagnetism
When valve 2 and 3 obtains electric simultaneously, the compressed air in air accumulator 1 enters the pneumatic of anti-asthma vent valve 5 through the port 1 to 2 of control valve 2
Left chamber, executing agency, the compressed air of the pneumatic actuator right chamber of anti-asthma vent valve 5 is through 2 to 1 quilt of port of control valve 3
It is put into atmosphere, the air rammer of the pneumatic actuator of anti-asthma vent valve 5 is pressed towards right side, and anti-asthma vent valve 5 is closed.Similarly,
Anti-asthma vent valve 15 is by obtaining, power loss control Qi Guan, opening while control solenoid valve 16 and 17.Anti-asthma vent valve 6 can also lead to
It obtains, power loss control Qi Guan, open while crossing control solenoid valve 2 and 3, but in the pneumatic actuator left chamber of anti-asthma vent valve 5,6
Room pipeline (i.e. the corresponding outlet pipe of pneumatic actuator when the anti-asthma vent valve is opened) is equipped with a fast open electromagnetic valve, opens fastly
It is opened when pass, power loss when solenoid valve 4 obtains electric, the compression when controlling solenoid valve 3 and the power loss simultaneously of fast open electromagnetic valve 4, in air accumulator 1
Air through control valve 3 port 3 to 2 enter anti-asthma vent valve 6 pneumatic actuator right chamber, anti-asthma vent valve 6 it is pneumatic
The compressed air of left chamber, executing agency is quickly put into atmosphere, the pneumatic actuator of anti-asthma vent valve 6 through fast open electromagnetic valve 4
Air rammer by quickly pressed to left side, anti-asthma deflate 6 quickly open.The setting of fast open electromagnetic valve 4 is so that the 5th grade of compressor puts
Air pipe has the function of Rapid degassing, further increases the fast-response of gas turbine anti-asthma blow-off system.
The presence of air accumulator 1 makes each switch operation of anti-asthma vent valve 5,6,15 have adequately control air.
The air drawn from blower outlet enters air accumulator 1 through filter 8 and non-return valve 7, and non-return valve 7 prevents compressed air from gas storage
Tank 1 passes back into gas turbine.The first time of air accumulator 1 inflates, and is to obtain filling from outside by valve 11.Valve 9 is equipped with
Two manual switch knobs, one of switching knob are opened, and pressure gauge 10 can be made to put into, and the compression monitored in air accumulator 1 is empty
Atmospheric pressure；Another switching knob is opened, and can release compressed air in air accumulator 1, to judge whether pressure gauge 10 is normal.Just
In normal situation, exhaust valve 12 is opened, and the compressed air in air accumulator 1 is automatically drained out superpressure through throttle orifice 13 and automatic exhaust steam valve 14
Part, throttle orifice 13 and automatic exhaust steam valve 14 play compressed air pressure in adjustment adjusting air accumulator 1, ensure that 1 safety of air accumulator makes
Effect.When it is time for repair, exhaust valve 12 can close, and automatic exhaust steam valve 14 is isolated by it.
When gas turbine starts beginning, 4 power loss of solenoid valve 2,3,16,17 and fast open electromagnetic valve, anti-asthma vent valve are controlled
5,6,15 in open position, if any one anti-asthma vent valve cannot be opened, gas turbine starting just abends.Work as machine
Group revolving speed rises to the 2280rpm(value can carry out small range adjustment according to the actual operation) when, control solenoid valve 16 and 17
Obtain electric, the closing of anti-asthma vent valve 15；Small range adjustment can be carried out according to the actual operation when revolving speed rises to the 2940rpm(value)
When, it controls solenoid valve 2,3 and fast open electromagnetic valve 4 obtains electric, the closing of anti-asthma vent valve 5 and 6；It is operated normally in gas turbine (specified
Revolving speed 3000rpm) during, anti-asthma vent valve is always in closed position, when gas turbine rotary speed is reduced to minimum tolerance limit
Value, anti-asthma vent valve are opened, orderly close-down again when revolving speed increases.In stopping process, when fuel valve is closed, all anti-asthmas
Vent valve opens simultaneously immediately.Gas turbine during normal operation, is opened if anti-asthma vent valve is all or part of, gas turbine
Power and efficiency can reduce, but gas turbine remains operational, because bringing the danger of accident without compressor surge at this time.
Gas turbine anti-asthma blow-off system provided by the invention, compressed air are introduced into from blower outlet through non-return valve 7
Air accumulator 1, it is ensured that each switch operation of anti-asthma vent valve has adequately control air, improves system reliability；
Throttle orifice 13 and automatic exhaust steam valve 14 are set, it is ensured that the safe handling of air accumulator 1, pressure are stablized, and the safety and stability of system is improved
Property；System is designed to that anti-asthma vent valve is opened when control solenoid valve and fast open electromagnetic valve power loss, and effectively preventing power loss causes to prevent
The dangerous situation that asthma vent valve cannot be opened, improves the reliability of system；Two are provided in the 5th grade of blowdown piping of compressor
Anti-asthma vent valve, it is ensured that it deflates successfully in corresponding operating condition, increases system safety margin；Meanwhile the 5th grade of bleeder pipe of compressor
Road have all the way design have Rapid degassing function, further increase safety and the fast-response of system.
Claims (9)
1. a kind of gas turbine anti-asthma blow-off system, the blowdown piping including being set to two-stage among compressor；It is characterized in that, institute
State gas turbine anti-asthma blow-off system further include:
Anti-asthma vent valve is respectively arranged among the compressor on the blowdown piping of two-stage using pneumatic operated valve；
Four control solenoid valves control the blowdown piping being arranged in two-stage among compressor respectively and correspond to the pneumatic of anti-asthma vent valve
The mobile gas of piston；When controlling solenoid valve power loss, controls corresponding anti-asthma vent valve and open.
2. gas turbine anti-asthma blow-off system according to claim 1, which is characterized in that the gas turbine anti-asthma is deflated
System further includes air accumulator；The control solenoid valve is triple valve, and one end is connected with air accumulator, and one end is connected to atmosphere, the other end
It is connected with the corresponding chamber of pneumatic actuator of corresponding anti-asthma vent valve；When the pneumatic actuator of each anti-asthma vent valve
When two control solenoid valves while power loss that left and right chamber is connected respectively, the compressed air in the air accumulator is via right
The control solenoid valve answered, which enters in the pneumatic actuator of anti-asthma vent valve, pushes the anti-asthma vent valve to open.
3. gas turbine anti-asthma blow-off system according to claim 2, which is characterized in that when the gas of each anti-asthma vent valve
Compression when two control solenoid valves while power loss that the dynamic left and right chamber of executing agency is connected respectively, in the air accumulator
Air enters the pneumatic actuator right chamber of the anti-asthma vent valve, the gas of the anti-asthma vent valve via corresponding control solenoid valve
The compression control of dynamic left chamber, executing agency is put into atmosphere through corresponding control solenoid valve, at this point, the anti-asthma vent valve is pneumatic
Piston is pressed towards left side, and anti-asthma vent valve is opened.
4. gas turbine anti-asthma blow-off system according to claim 3, which is characterized in that among the compressor two-stage its
The blowdown piping being arranged in middle level-one is 2, is equipped with an anti-asthma vent valve, two anti-asthma vent valves on each blowdown piping
The left chamber of pneumatic actuator be connected with same control solenoid valve, right chamber is connected with another control solenoid valve.
5. gas turbine anti-asthma blow-off system according to claim 4, which is characterized in that the gas turbine anti-asthma is deflated
System further include:
Fast open electromagnetic valve, the wherein blowdown piping all the way being arranged in the intermediate level-one that compressor has two-way blowdown piping
When anti-asthma vent valve is opened on the corresponding outlet pipe of pneumatic actuator.
6. gas turbine anti-asthma blow-off system according to claim 5, which is characterized in that the gas turbine anti-asthma is deflated
System further includes filter and non-return valve；The outlet air of the compressor is successively through the filter and non-return valve and air accumulator
It is connected.
7. gas turbine anti-asthma blow-off system according to claim 6, which is characterized in that the air accumulator is equipped with for the first time
Air intake valve.
8. gas turbine anti-asthma blow-off system according to claim 7, which is characterized in that the air accumulator is equipped with exhaust
Valve, throttle orifice and automatic exhaust steam valve；The air accumulator passes sequentially through exhaust valve, throttle orifice, automatic exhaust steam valve and is connected with atmosphere.
9. gas turbine anti-asthma blow-off system according to claim 7, which is characterized in that the air accumulator is equipped with pressure
Monitor valve；Switching knob there are two setting on the pressure monitor valve, is connected with pressure gauge and atmosphere respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250863.7A CN109838313B (en) | 2019-03-29 | 2019-03-29 | Anti-asthma deflation system of gas turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250863.7A CN109838313B (en) | 2019-03-29 | 2019-03-29 | Anti-asthma deflation system of gas turbine |
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| Publication Number | Publication Date |
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| CN109838313A true CN109838313A (en) | 2019-06-04 |
| CN109838313B CN109838313B (en) | 2024-02-06 |
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Cited By (1)
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| CN112412864A (en) * | 2020-12-11 | 2021-02-26 | 中国航发上海商用航空发动机制造有限责任公司 | Compressor experiment platform and surging and deep stall exit method thereof |
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| CN112412864B (en) * | 2020-12-11 | 2022-07-19 | 中国航发上海商用航空发动机制造有限责任公司 | Compressor experiment platform and surging and deep stall exit method thereof |
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| Publication number | Publication date |
|---|---|
| CN109838313B (en) | 2024-02-06 |
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